If it is between regular Coke or regular Pepsi I say Pepsi ALL the way! Now days I don't drink either though, after years of hearing my mom tell me soda is empty calories and I should be drinking diet I have come to the point where I feel guilty for drinking regular soda! So now I only drink diet when I drink soda. Since I think diet sodas taste the same I have no preference over brands for that reason, I drink diet coke now purely for the coke rewards LOL